Tanaka Yoshiki

A passenger plane over the Pacific Ocean crash-lands on a nearby island. It was an island not on the nautical chart, where the native "Shimabitos" lived a barbaric life. Gamou, a young royal family on the island, orders the Shimabitos to attack the aircraft and the survivors!

The Yoshinomiya Municipal High School 2nd year students embarked on what they'd hoped was an educational trip with their friends and away from family but it was not meant to be... Their ship was hit by unexpected rough seas and crashed on a strange island! The surviving students are trying to understand what happened but soon they realize they are not alone on this island and the locals don't appear to be very friendly to strangers!!!

A poisonous atmosphere known as madness settled over Japan, causing mass devastation. Humans, wearing gas masks, hunt and kill monsters transformed by this gas.

The plot follows Kazaoka Kei, a high school junior who has an ultra computer chip “Quantum CP” embedded in his brain. He uses his increased intelligence to help the police with weird and mysterious cases that go beyond the normal bounds of reasoning.